US4420957A - Monitor method and apparatus for particle blasting equipment - Google Patents
Monitor method and apparatus for particle blasting equipment Download PDFInfo
- Publication number
- US4420957A US4420957A US06/314,792 US31479281A US4420957A US 4420957 A US4420957 A US 4420957A US 31479281 A US31479281 A US 31479281A US 4420957 A US4420957 A US 4420957A
- Authority
- US
- United States
- Prior art keywords
- media
- flow rate
- air
- nozzle
- airstream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
- B24C7/0053—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier
- B24C7/0061—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier of feed pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/004—Arrangements for controlling delivery; Arrangements for controlling the spray area comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm
- B05B12/006—Pressure or flow rate sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/14—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts
- B05B15/18—Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts for improving resistance to wear, e.g. inserts or coatings; for indicating wear; for handling or replacing worn parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/12—Spray pistols; Apparatus for discharge designed to control volume of flow, e.g. with adjustable passages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
- B05B7/262—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device
- B05B7/267—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device the liquid and the gas being both under pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
- B24C5/04—Nozzles therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
- B24C7/0053—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/47—Burnishing
- Y10T29/479—Burnishing by shot peening or blasting
Definitions
- the present invention relates to particle blasting equipment and methods, and more particularly to particle blasting equipment and methods for monitoring media flow, nozzle wear, and nozzle blockage.
- Particle blasting equipment is used in a variety of applications for a variety of purposes.
- such equipment is used to compressively peen metal parts to improve fatigue and stress characteristics of the parts.
- Particle blasting equipment is also used to blast objects to remove surface irregularities, dirt and the like.
- particle blasting equipment typically includes a source of compressed air, structure for conveying the compressed air from the source, structure for introducing the particle blasting media into the airstream, and a nozzle for directing the airstream, carrying the blasting media, against a desired article.
- a source of compressed air structure for conveying the compressed air from the source
- structure for introducing the particle blasting media into the airstream structure for introducing the particle blasting media into the airstream
- a nozzle for directing the airstream, carrying the blasting media, against a desired article.
- a particle blasting nozzle typically includes a restricted opening to focus or direct the media passing therethrough. As the blasting media passes through the nozzle, the restricted opening is worn away and enlarged. Ultimately, the opening is so enlarged that the media stream is not properly focused. Consequently, nozzle wear must be monitored to determine the appropriate time to replace the worn nozzle with one having a properly dimensioned opening.
- the nozzle may also become blocked due to excessive media accumulation within the nozzle. When such blockage occurs, blasting is interrupted until appropriate corrective action is taken. Accordingly, the nozzle must also be monitored for blockage as well as excessive wear.
- Media flow in prior blasting equipment is monitored by either viewing the media discharged from the nozzle or observing the amount of media expanded during a given time.
- a visual observation of the media passing out of the nozzle does not provide an accurate measurement of the media flow.
- Monitoring the media expanded over a given quantum of time provides only an average media flow and does not indicate periods of shorter duration when the media flow falls above or below acceptable levels.
- nozzle wear in prior equipment is inspected only after the airstream is interrupted.
- the restricted opening is examined either visually or using a measuring gauge.
- Such an examination is time consuming, requiring equipment shutdown, and must be performed repeatedly. Nozzle monitoring problems are further complicated when the nozzle is located within a shroud or other protective equipment.
- a particle blasting apparatus having a source of compressed air, a nozzle having a restricted opening, structure for conveying the compressed air from the source to the nozzle in an airstream, structure for introducing particle blasting media into the airstream, and structure responsive to the rate of flow of the airstream through the air conveying structure.
- the air flow rate exceeds a predetermined maximum parameter, either insufficient media is being introduced into the airstream or the restricted opening in the nozzle is excessively worn.
- the air flow rate falls below a predetermined minimum parameter, either excessive media is being introduced into the airstream or the nozzle is blocked.
- a blasting apparatus in accordance with the present invention provides for continuously, readily, and easily monitoring both the media flow rate and nozzle wear and blockage without interrupting the blasting operation. Further, because the monitoring is performed continuously, relatively brief periods of excessive or insufficient media flow are readily and easily detected.
- the structure monitoring the rate of flow of the airstream is operably connected to indicator lights which are lit when the air flow rate exceeds a predetermined maximum parameter or falls below a predetermined minimum parameter.
- the air flow monitor structure is operably connected to shut-off valves to automatically shut the blasting equipment down if the air flow rate falls outside the range of acceptable parameters.
- FIG. 1 is a schematic diagram of the particle blasting apparatus of the present invention
- FIG. 2 is a sectional view of the nozzle
- FIG. 3 is a perspective, sectional view of the air flow meter.
- a particle blasting device in accordance with a preferred embodiment of the invention is illustrated in the drawings and generally designated 10.
- device 10 includes compressed air supply 12, media pot 14, nozzle 18, piping 16 interconnecting air supply 12 and nozzle 18, media pipe 17 interconnecting media pot 14 and piping 16, and air flow meter 20 positioned within piping 16.
- compressed air flows from supply 12 to nozzle 18 through piping 16.
- Media 22 within pot 14 is introduced into piping 16 through media tube 17.
- This mixture of compressed air and blasting media is then directed by nozzle 18 onto the article to be blasted, for example wire 108.
- Nozzle 18 (FIG. 2) defines a restricted opening 24 to focus or direct the blasting media passing therethrough.
- the volume or rate of flow of air through piping 16 is affected primarily by the amount of media 22 introduced into the piping and the size of restricted opening 24 in nozzle 18. Consequently, the rate of flow of media 22 and the effective size of opening 24 are monitored by monitoring the air flow rate through meter 20 in piping 16.
- Air supply 12 is a conventional supply producing an air pressure at port 26 of approximately 100 psi. Air flowing out of supply 12 passes through pressure regulator 28, which may be adjusted to further reduce and control the pressure of the air flowing through piping 16. In a preferred embodiment of the invention, valve 28 is adjusted so that air exiting valve 28 has a pressure of approximately 80 psi.
- Media pressure pipe 29 extends from piping 16 at junction 30 and communicates with both piping 16 and media pot 14 to pressurize the pot. As will be described, media 22 will not generally flow through media tube 17 unless pot 14 is so pressurized.
- Media tank 14 is a closed, hollow member adapted to receive particle blasting media 22.
- Media pressure pipe 29 interconnects piping 16 and pot 14 to pressurize the pot allowing media 22 to flow downwardly through media tube 17.
- Media 22 exits pot 14 by a pipe 17 flowing through both shut-off valve 38 and control valve 40.
- Shut-off valve 38 and control valve 40 are diaphragm and pinch valves, respectively. Maintenance is performed on elements downstream of valve 38 (e.g., control valve 40 and nozzle 18) by closing shut-off valve 38.
- Control valve 40 is opened or closed to permit or prevent media flow.
- control valves 34 and 40 operate in unison to permit or restrict air flow and media flow substantially simultaneously.
- media 22 After leaving control valve 40, media 22 passes through flow orifice 42 to mixing junction 36. Because media pot 14 is pressurized through media pressure pipe 29, the air pressure within media tube 17 is substantially the same as the air pressure within pipe 16. Consequently, the pressurized air within pipe 16 does not force media 22 through tube 17 back into media tank 14. Media 22 is free to fall through tube 17 into the airstream conveyed in piping 16 to be carried by the airstream.
- the airstream flowing within pipe 16 must accelerate media 22 dropping into piping 16 at mixing junction 36, so that the rate of flow of the airstream is somewhat reduced by each particle so accelerated. Therefore, the air flow rate through piping 16 is at least partially dependent upon the quantity of media 22 introduced at junction 36. If a relatively large amount of media 22 is introduced, the rate of flow of the airstream through piping 16 is relatively low; similarly, if the amount of media 22 introduced at junction 36 is relatively small, the rate of flow of the airstream through piping 16 is relatively large.
- Coupling 44 is a standard coupling which interconnects pipe 16a and hose 46.
- nozzle 18 generally includes coupling 48 fastened to hose 46, housing 50 threadedly secured within coupling 48, and sleeve 52 positioned within housing 50.
- a plurality of screws 54 extend through coupling 48 and into hose 46 to secure the coupling thereto.
- a portion 56 of the interior diameter of coupling 48 is threaded to receive externally threaded portion 58 of housing 50.
- Resilient washer 60 abuts both hose 46 and housing 50 to insure an airtight seal therebetween. By tightening housing 50 within coupling 48, washer 60 is compressed between hose 46 and housing 50.
- wear-resistant sleeve 52 Positioned within housing 50 is wear-resistant sleeve 52, which is preferably fabricated of boron carbide or tungsten carbide to withstand the constant bombardment of media 22 flowing therethrough.
- a first end 64 of sleeve 52 engages washer 60, and the opposite end 66 of sleeve 52 faces the article to be blasted.
- Inner wall 68 of sleeve 52 tapers inwardly from first end 64 to a restricted opening 24 and then flares outwardly from restricted opening 24 to opposite end 66.
- the particles are focused or directed as they pass through restricted opening 24.
- media 22 passes beyond restricted opening 24, it travels in a shot stream 70 wherein the individual media particles travel in substantially parallel paths.
- meter 20 is installed in piping 16 to monitor the rate of flow of the airstream through piping 16.
- meter 20 is well known to one skilled in the art, such a meter has not previously been used in conjunction with particle blasting equipment.
- meter 20 comprises a housing 74 defining an air passageway or chamber 76, a vane shaft 78 rotatably mounted within chamber 76, and vane 80 fixedly mounted on shaft 78.
- Housing 74 further defines internally threaded inlet 82 and internally threaded outlet 84 communicating with chamber 76.
- Coil spring 86 has one end fixedly mounted to housing 76 and its other end fixedly mounted to shaft 78 to bias vane 80 into engagement with stop 88 defined by housing 74.
- vane 80 is deflected rotating shaft 78. The deflection of vane 80 is generally proportional to the rate of flow through meter 20.
- Stop 90 is positioned within housing 74 to prevent vane 80 from rotating beyond a maximum position.
- Pointer 92 is fixedly mounted on shaft 78 for rotation therewith.
- Scale 94 is positioned behind pointer 92 to provide a means of reading the relative movement of the pointer.
- vane 80 When vane 80 is undeflected (i.e., when no air is flowing through meter 20), pointer 92 points to a 0 on scale 94.
- vane 80 is deflected in proportion to the rate of flow of the airstream, and accordingly pointer 92 is deflected toward a number on scale 94 generally proportional to the rate of flow through meter 20.
- Cam 96 is also fixedly mounted on shaft 78 for rotation therewith to operate switch 98.
- Cam follower 97 extending from switch 98 engages the outer, or cam, surface of cam 96 in a conventional manner.
- Cam 96 is oriented on shaft 78 so that when the rate of flow of air through the meter is less than a predetermined minimum parameter switch 98 through line 100a turns light 102 on, indicating that the air flow rate is too low.
- switch 98 through line 100b turns light 104 on.
- line 100c may be electrically connected to switch 98, control valves 34 and 40, and wire drawer 106 to automatically close those valves and shut down the wire drawer should the rate of flow be greater than the predetermined maximum parameter or less than the predetermined minimum parameter.
- the compressed air produced by supply 12 flows through piping 16, valves 32 and 34, and flow meter 20 to nozzle 18. Compressed air also flows from regulator 28 through media pressure pipe 29 to pot 14 to pressurize the pot.
- valve 40 When valve 40 is opened, media falls through media pipe 17, valves 38 and 40, and flow orifice 42 to mixing junction 36.
- media 22 is introduced into the airstream conveyed within pipe 16 to be carried by the airstream through coupling 44 to nozzle 18.
- the amount of media introduced into pipe 16 is regulated by flow orifice 42.
- the airstream carrying the media particles passes through nozzle 18 and more particularly, restricted opening 24 to focus or direct the media onto the article to be blasted.
- approximately 10 to 20 pounds per minute of media is introduced into the airstream at junction 36. With an air pressure of approximately 80 psi within piping 16, approximately 100 to 150 cfm of air will pass through pipe 16 to nozzle 18.
- Cam 96 on vane shaft 78 is selected and mounted so as to actuate switch 98 to illuminate light 102 below a reading of 100 cfm and to illuminate light 104 above a reading of 150 cfm.
- switch 98 through line 100c may cause control valves 34 and 40 to close and wire drawer 106 to shut down when the air flow rate is outside of the acceptable range.
- cam 96 on vane 78 will be rotated so as to cause switch 98 through line 100a to illuminate light 102 indicating that a problem exists.
- switch 98 may cause valves 34 and 40 to close, preventing further blasting, and wire drawer 106 to shut down. The operator must then take corrective action to either unblock nozzle 18 or adjust flow orifice 42 so that the proper amount of media 22 is introduced into the airstream.
- the particle blasting apparatus of the present invention enables both media flow and nozzle wear and blockage to be easily, readily, and continuously monitored. Because the rate of flow of the airstream through device 10 is dependent primarily upon both the rate of flow of media 22 and the effective size of restricted opening 24, both the media flow and nozzle condition can be monitored by monitoring the air flow rate. If the rate of flow is greater than the predetermined maximum parameter or is less than a predetermined minimum parameter device 10 either illuminates an indicator light or shuts itself, or associated equipment, down so that corrective action may be taken.
Abstract
Description
Claims (24)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US06/314,792 US4420957A (en) | 1981-10-26 | 1981-10-26 | Monitor method and apparatus for particle blasting equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/314,792 US4420957A (en) | 1981-10-26 | 1981-10-26 | Monitor method and apparatus for particle blasting equipment |
Publications (1)
Publication Number | Publication Date |
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US4420957A true US4420957A (en) | 1983-12-20 |
Family
ID=23221464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US06/314,792 Expired - Lifetime US4420957A (en) | 1981-10-26 | 1981-10-26 | Monitor method and apparatus for particle blasting equipment |
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Cited By (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0119057A2 (en) * | 1983-03-10 | 1984-09-19 | Nordson Corporation | Dispenser malfunction detector |
EP0159977A2 (en) * | 1984-04-25 | 1985-10-30 | BÖHLER Gesellschaft m.b.H. | Fluid jet cutter |
US4614100A (en) * | 1983-09-14 | 1986-09-30 | Btr Plc | System for the monitoring and control of flow of particulate material in impact treatment equipment |
US4805429A (en) * | 1987-12-28 | 1989-02-21 | General Electric Company | Shot peening system and method with velocity sensing |
US4848123A (en) * | 1988-05-02 | 1989-07-18 | General Electric Company | Shot peening mass flow and velocity sensing system and method |
WO1991015336A1 (en) * | 1990-04-06 | 1991-10-17 | Church & Dwight Co., Inc. | Improvement in blasting apparatus |
US5071289A (en) * | 1989-12-27 | 1991-12-10 | Alpheus Cleaning Technologies Corp. | Particulate delivery system |
US5081799A (en) * | 1990-04-06 | 1992-01-21 | Church & Dwight Co., Inc. | Blasting apparatus |
US5083402A (en) * | 1990-04-06 | 1992-01-28 | Church & Dwight Co., Ind. | Blasting apparatus |
WO1992020456A1 (en) * | 1991-05-17 | 1992-11-26 | Ingersoll-Rand Company | Integrity sensor for fluid jet nozzle |
WO1993009915A1 (en) * | 1991-11-19 | 1993-05-27 | Church & Dwight Company, Inc. | Blasting apparatus and method |
US5239788A (en) * | 1987-12-04 | 1993-08-31 | Whitemetal, Inc. | Abrasive feed system |
US5247766A (en) * | 1992-01-31 | 1993-09-28 | Kildea Robert J | Process for improving cooling hole flow control |
US5271255A (en) * | 1992-08-17 | 1993-12-21 | General Electric Company | Method to control and monitor a pressure pot shot peening system |
US5327755A (en) * | 1992-08-17 | 1994-07-12 | General Electric Company | Constant flow control for a pressure pot shot peening machine |
WO1994021426A1 (en) * | 1993-03-15 | 1994-09-29 | Whitemetal, Inc. | Wet abrasive blasting method and apparatus |
US5460025A (en) * | 1994-07-14 | 1995-10-24 | Electronics Incorporated | Shot peening method |
US5590703A (en) * | 1995-04-17 | 1997-01-07 | Eckert; C. Edward | Aluminum surface treatment |
US5592841A (en) * | 1994-07-14 | 1997-01-14 | Champaigne; Jack M. | Shot peening method |
US5797290A (en) * | 1992-03-13 | 1998-08-25 | Westinghouse Electric Corporation | Closed system and method for shot peening adjacently located tubes in a power generation system |
US5820447A (en) * | 1997-02-18 | 1998-10-13 | Inter+Ice, Inc. | Ice blasting cleaning system |
US5910042A (en) * | 1997-02-18 | 1999-06-08 | Inter Ice, Inc. | Ice blasting cleaning system and method |
US6694789B2 (en) * | 2001-04-26 | 2004-02-24 | Sintokogio, Ltd. | Method and apparatus for controlling shot-peening device |
US20050058507A1 (en) * | 2003-09-17 | 2005-03-17 | Cedarapids, Inc. | Multi-use paving tractor with tool attachments |
US6976804B1 (en) | 2003-08-26 | 2005-12-20 | Charles Lee Asplin | Method of repairing damaged concrete slabs |
US20060101883A1 (en) * | 2004-11-18 | 2006-05-18 | General Electric Company | Laser aligned shotpeen nozzle |
US20060237556A1 (en) * | 2005-04-26 | 2006-10-26 | Spraying Systems Co. | System and method for monitoring performance of a spraying device |
US7226274B1 (en) | 2003-08-26 | 2007-06-05 | Charles Lee Asplin | Cement slab leveling apparatus |
US20070210182A1 (en) * | 2005-04-26 | 2007-09-13 | Spraying Systems Co. | System and Method for Monitoring Performance of a Spraying Device |
US8186907B1 (en) | 2000-10-13 | 2012-05-29 | Charles Lee Asplin | Slab leveling system and method |
CN102854023A (en) * | 2012-09-17 | 2013-01-02 | 南方英特空调有限公司 | Sandblasting testing machine and sandblasting testing method |
US20130022412A1 (en) * | 2011-07-18 | 2013-01-24 | Robert Richard Matthews | Food Grade USDA Abrasive Media Free Flow System |
US20130022413A1 (en) * | 2011-07-18 | 2013-01-24 | Robert Richard Matthews | Food Grade USDA Abrasive Media System |
US20130251462A1 (en) * | 2012-03-22 | 2013-09-26 | Robert Richard Matthews | Food Grade USDA Abrasive Media System |
US20130280992A1 (en) * | 2012-04-22 | 2013-10-24 | Robert Richard Matthews | Food Grade USDA Abrasive Media System |
CN107178679A (en) * | 2017-07-03 | 2017-09-19 | 华北科技学院 | A kind of apparatus and method for being used to prevent the large-scale particulate matter in mucus from blocking pipeline |
EP3345725A1 (en) * | 2017-01-06 | 2018-07-11 | Gottfried Wilhelm Leibniz Universität Hannover | Fluid beam cutting device |
WO2019060186A1 (en) * | 2017-09-21 | 2019-03-28 | Shape Technologies Group, Inc. | Air flow management systems and methods to facilitate the delivery of abrasives to an abrasive fluid jet cutting head |
US10487473B2 (en) | 2017-06-20 | 2019-11-26 | Charles L. Asplin | Wall lifting methods |
US11260503B2 (en) | 2013-12-20 | 2022-03-01 | Flow International Corporation | Abrasive slurry delivery systems and methods |
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Cited By (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0119057A3 (en) * | 1983-03-10 | 1986-01-22 | Nordson Corporation | Dispenser malfunction detector |
EP0119057A2 (en) * | 1983-03-10 | 1984-09-19 | Nordson Corporation | Dispenser malfunction detector |
US4614100A (en) * | 1983-09-14 | 1986-09-30 | Btr Plc | System for the monitoring and control of flow of particulate material in impact treatment equipment |
EP0159977A2 (en) * | 1984-04-25 | 1985-10-30 | BÖHLER Gesellschaft m.b.H. | Fluid jet cutter |
EP0159977A3 (en) * | 1984-04-25 | 1988-06-01 | Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) | Fluid jet cutter |
US5239788A (en) * | 1987-12-04 | 1993-08-31 | Whitemetal, Inc. | Abrasive feed system |
US5412910A (en) * | 1987-12-04 | 1995-05-09 | Whitemetal, Inc. | Wet abrasive blasting method and apparatus |
US4805429A (en) * | 1987-12-28 | 1989-02-21 | General Electric Company | Shot peening system and method with velocity sensing |
US4848123A (en) * | 1988-05-02 | 1989-07-18 | General Electric Company | Shot peening mass flow and velocity sensing system and method |
FR2630673A1 (en) * | 1988-05-02 | 1989-11-03 | Gen Electric | DEVICE AND METHOD FOR DETECTING MASS FLOW AND SPEEDING SPEED |
US5071289A (en) * | 1989-12-27 | 1991-12-10 | Alpheus Cleaning Technologies Corp. | Particulate delivery system |
US5081799A (en) * | 1990-04-06 | 1992-01-21 | Church & Dwight Co., Inc. | Blasting apparatus |
AU638130B2 (en) * | 1990-04-06 | 1993-06-17 | Church & Dwight Company, Inc. | Improvement in blasting apparatus |
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